This image, taken by the Compact Reconnaissance Imaging Spectrometer for Mars aboard NASA's Mars Reconnaissance Orbiter, shows the infrared brightness of the central peak and wall of a crater in Tyrrhena Terra, in Mars' southern highlands. Livonia, N.Y., high school students participating in NASA's Mars Exploration Science Data Teams project chose this site for a more detailed observation after studying images that showed outcrops of clay-like minerals, which indicate the past presence of water.